1. In a typical toilet a floating ball is used to close off the water filling the cistern when it reaches a certain level - see schematic below. If 10 lbs of force are required to shut the valve what size does the pall have to be in inches? (ans = 9")
1. In a typical toilet a floating ball is used to close off the water filling the cistern when it reaches a certain level - see schematic below. If 10 lbs of force are required to shut the valve what size does the pall have to be in inches? (ans = 9")
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:In a typical toilet a floating ball is used to close off the water filling the cistern when it reaches a
certain level - see schematic below. If 10 lbs of force are required to shut the valve what size does the
1.
ball have to be in inches? (ans =
9")
10 lb
6"
45°
6"
2.
A helium filled weather balloon will carry a 10lb data sonde to 50,000 ft. What diameter does it
need to be? Assume weight of balloon is 1 Ib. (ans = 25.6 ft)
3.
The cross section of the hull of a bulk freighter is given below. You can assume the lower part of
the hull is a semi-circle. The ship is 600 ft long. If the ship weighs 40,000 tons how far will it sit into the
water (sea water).
(41 ft)
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